a{
    text-decoration: none;
}
a.b{
    text-decoration:none;
    color:#fff;
}
a.b:link{
    color:#fff;
    text-decoration: none; 
}
a.b:visited{
    color:#fff;
    text-decoration: underline; 
}
a.b:hover{
    color:#fff;
    text-decoration: none;  
}
a.b:active,a.def:active{
    color:red;
    text-decoration: none; 
}
.write>h2{
    top:-20px ;
}



body{
margin: 0;
padding: 0;
font-size: 0;
}



.main{
    height: 700px;
    width: 100%;
    margin: 0;
    top: 0;
    padding: 0;
    position: relative;
    background-size:cover ;
    background-image:url('./微信图片_20201112083331副本.png'); 
    background-repeat: no-repeat; 
    background-attachment: fixed; 
}

.main .totop{
    position: fixed;
    color: #fff;
    font-size: 50px;
    font-weight: 500;
    height: 50px;
    background-color: rgb(212, 209, 209);
    right: 40px;
    top: 840px;
    cursor: pointer;
    z-index: 10000;
}
.main:before{
    content: "";
    display: block;
    position: absolute;
    width: 100vw;
    height: 700px;
    background-color:rgba(0, 0, 0, 0.3) ;
}

.header{
    position: absolute;
    margin: 0 ;
    width: 100%;
    height: 100%;
    text-align: right;
}
img{
    width: 70%;
    height: 70%;
}
.header .left{
    top: 24px;
    left: 200px;
    position: absolute;
    /* width: 118px;
    height: 40px; */
    z-index: 2;
}
.link{
    
    top: 20px;
    width: 500px;
    height: 50px;
    position: absolute;
    right: 150px;
}
/* .link a{
    right: 20px;
    margin: 0 20px;
    font-size: large;
} */
.link span{
    cursor: pointer;
    font-size: small;
    color: white;
    float: left;
    line-height: 50px;
    width: 100px;
    height: 50px;
    text-align: center;
}
.link span:hover{

    background-color: rgba(255, 255, 255, 0.2);
}
.text1{
    width: 1000px;
    height: 400px;
    z-index: 500;
    margin:0 auto;
    left: 50%;
    top: 50%;
    margin-left:-500px ;
    margin-top: -150px;

    color: black;
    position: absolute;
} 

.text1 h1{
    text-align: center;
    line-height: 100px;
    font-size: 40px;
    font-weight: normal;
    letter-spacing: 3px;
    color: white;
}
h1:nth-child(2){
    font-size: 60px;
    font-weight: 600;
}
.text1 p{
    /* line-height: 50px; */
    color: white;
    font-weight: 500;
    font-size: 18px;
    text-align: center;
    /* margin-right: 300px; */
}















.main2{
    background-color: white;
}

.second{
    width: 100%;
    height: 540px;
    padding-right: 15px;
    padding-left: 15px;
    position: relative;
    
}

.content{
    width: 1170px;
    margin: 0 auto;
    position: relative;
    display: flex;
}
/* .content div{
    flex: 1;
} */
.write{
    width:70% ;
    height: 540px;
    padding: 20px 50px;
    width: 720px;
    left:20px ;
}

.write h2{
    padding-top: 40px;
}

p.a{
    margin-top: 20px;
    line-height: 35px;
    font-size: 18px;
    letter-spacing: 1px;
}

a.b{
    margin-top:10px ;
    display: inline-block   ;
    text-align: center;
    width: 100px;
    height: 40px;
    line-height: 40px;
    border-radius: 5px;
    background: rgb(37, 141, 33);
}
p.c{
    color: #9e9e9e;
    margin-top: 40px;
    margin-left: 20px;
}
.img{
    margin-top: 20px;
    background-image:url(./chuan.png);
    overflow: hidden;
    background-size: 500px auto ;
    position: relative;
    flex: 1;
}
.img1{
    margin-top: 20px;
    background-image:url(./shou.png);
    overflow: hidden;
    background-size: 500px auto ;
    position: relative;
    flex: 1;
}
.img2{
    margin-top: 20px;
    background-image:url(./wei.png);
    overflow: hidden;
    background-size: 500px auto ;
    position: relative;
    flex: 1;
}
.img3{
    margin-top: 20px;
    background-image:url(./web.png);
    overflow: hidden;
    background-size: 500px auto ;
    position: relative;
    flex: 1;
}









.footer{
    width: 100%;
    height: 280px;
}

.content{
    height: 100%;
}
.left1{
    flex: 5;
    height: 100%;
}
.left2{
    flex: 3;
    height: 100%;
}
.right1{
    flex: 3;
    height: 100%;
}
.right2{
    flex: 2;
    height: 100%;
}
.asd{
    display: inline-block;
    width: 34px;
    height: 36px;
    margin-top: 50px;
    margin-left: 70px;
}
.abc{
    width: 70%;
    margin-top:20px ;
    margin-left:60px ;
}
a.def{
    display: inline-block;
    margin-left:60px ;
    margin-top:20px ;
    /* width: 196px;
    height: 16px; */
}
a.def:link{
    color:rgb(145, 145, 145);
    text-decoration:none;  
}
a.def:visited{

    color:rgb(145, 145, 145);
    text-decoration: underline; 
    
}

div.foot{
 height:150px ;
 margin-top:110px ;   
}
.foot div{
    margin: 10px 0;
}
.left1>p{
    margin-left:60px;
    margin-top:20px;
}
.right2{
    background: url(./ewm.jpg);
    background-size:contain;
    height: 180px;
    margin-top: 90px;
}

.third{
    background-color: #f5f5f5;
}
.fifth{
    background-color: #f5f5f5;
}


